Horace see



(No Model.)

H. SEE. STEAM BOILER.

No. 600,237. Patented Mar. 8,1898.

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HORACE SEE, OF NEW YORK, N. Y.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent N 0. 600,237, dated March 8, 1898. Application filed August 26, 1897. Serial No. 6%,44'7. (No model.)

To all whom it may concern:

Be it known that I, HORACE SEE, of the city, county, and State of New York, haveinvented a new and useful Improvement in Steam-Boilers, of which the following is a specification.

The object of myinvention is to retard the current of hot air and gases from the furnace of a steam-boiler, so as to augment the heating effect upon the tubes or other compartments in which water is contained and over or around which said current passes, while at the same time not materially choking the uptake area and thus cutting off the draft.

My invention consists in a partition or screen of wire-netting or other perforated or reticulated material which is to be so disposed with reference to the tubes or other chambers about or around which the heated current passes as to retard said current, substantially to prevent the flame from the furnace-grate from proceeding farther-toward the uptake, thus causing said flame and hot gases to exercise an augmented heating effect upon said tubes or chambers.

In my present application I illustrate one practical and useful embodiment of my invention as adapted to a water-tube boiler of the type fully described by me in Letters Patent No. 580,060, granted to me April 6, 1897. It is of course to be understood that I do not limit my invention to such particular adaptation or embodiment.

In the accompanying drawings, Figure 1 is a half transverse section of the aforesaid Water-tube boiler with my present invention applied thereto. Fig. 2 is a horizontal half-section of the same. Fig. 3 is a plan View of one of the wire-netting frames or screens, showing the employment of a double partition formed of wire-netting of different mesh. Fig. 4 is a longitudinal partial section of one of said frames.

Similar letters of reference indicate like parts.

A is the furnace-grate; B, the ash-pit; C, the lower water or mud drum; D, the upper water or steam drum; E, water-tubes connecting drums O and D; F, the inner casing of the boiler; G, the outer or air casing, and H the uptake to the funnel or stack. All of the aforesaid parts are substantially as shown in my aforesaid Letters Patent.

The air enters the ash-pit B from the space between the casingF G, thence passes through the grate A and between the Water-tubes E, and finally goes to the uptake H.

In a boiler of this construction it is desirable to retard the flame and hot gases while passing between the tubes E, and in this way to augment the heating effect upon said tubes. Therefore I provide a screen or partition L, of wire-netting or other'perforated or reticulated material, on the uptake side of said tubes. This screen, in accordance with wellknown laws, acts as a substantial barrier to the passage of flame through it, while it also operates mechanically to reduce the area of the passage and so to retard the gases therein. The consequence, as I have determined by careful practical tests, is that the heat of the escaping products of combustion becomes concentrated and retained around the tubes, and the steam-making quality of the generator is thus materially improved and enhanced.

While I do not herein limit myself to any particular mode of arranging the Wire-netting partition or of securing it in place, I will describe one arrangement thereof which is practicable and preferable in the special circumstances in which my invention is herein shown.

The wire-netting partition, which extends completely across the space leading to the uptake, so that all the products of combustion must pass through it, may be composed of three rectangular angle-iron frames, as J K 1. Each frame is filled with iron or steel wirenetting M, secured therein in any suitable way. The size of mesh of the netting will depend upon the extent of retardation of the hot'current desired. I have found in a marine boiler of the type here represented having a total escape area immediately adjacent to the tubes of eighteen and one-half square feet on each side that netting of No. 16 wire with meshes of about one-eighth inch in size (No. 8 mesh) works efficiently. Instead of a single thickness of wire-netting in the frame I may use two or more thicknesses, either of the same netting or of netting of difierentsized Wire and different areas of mesh. Thus in Figs. 3 and 4. I illustrate a partition-frame having two thicknesses of wire-netting, that at M being of smaller size and greater fineness than that at N. The coarse netting here acts to support and strengthen the finer netting.

In order to place the frames J K I in position, I provide ways or channels 0 of angleiron along the tops and bottoms of the external series of tubes E. I also provide a door Q, in the front wall P of the boiler and another door R in line therewith in the outer casing G. The openings closed by these doors are to be of such size that when both doors Q R are opened the three frames J K I may be successively inserted in the ways 0, so that they are retained thereby in proper position just outside the external line of tubes, as shown in Figs. 1 and 2.

I claim- 1. In combination with a furnace and a closed chamber heated by the products of combustion therefrom, a partition of reticulated or perforated material on the uptake side of and in proximity to said chamber; whereby the flame and hot gases from said furnace are retarded in the space surrounding said chamber, substantially as described.

2. I11 combination with a furnace and a closed chamberheated by the products of combustion therefrom, a partition of wire-netting consisting of detachable sections on the uptake side of and in proximity to said chamber; whereby the flame and hot gases from said furnace are retarded in the space surrounding said chamber, substantially as described. I

3. In combination with a furnace and a closed chamber heated by the products of combustion therefrom, a partition of two or more thicknesses of reticulated or perforated material on the uptake side of and in proximity to said chamber; whereby the flame and hot gases from said furnace are retarded in the space surrounding said chamber, substantially as described.

4. In combination with a furnace and a closed chamber heated by the products of combustion therefrom, a partition of two or more thicknesses of reticulated or perforated material having openings respectively of different area on the uptake side of and in proximity to said chamber; whereby the flame and hot gases from said furnace are retarded in the space surrounding said chamber, substantially as described.

5. In combination with a furnace and a closed chamber heated by the products of combustion therefrom, a partition of two or more thicknesses of wire-nettin g, respectively constructed of wire of different sizes on the uptake side of and in proximity to said chamber; whereby the flame and hot gases from said furnace are retarded in the space surrounding said chamber, substantially as described.

6. In combination with the furnace and tubes of a water-tube steam-boiler, a partition of reticulated or perforated material interposed between said tubes and the chimney or escape-duct and operating to retard in the space surrounding said tubes the flame and hot gases from the boiler-furnace, substantially as described.

7. In combination with the furnace and tubes of a water-tube steam-boiler a partition of reticulated or perforated material detachably secured between said tubes and the chimney or escape-duct and operating to retard in the space surrounding said tubes the flame and hot gases from the boiler-furnace, substantially as described.

8. In a steam-boiler of the type herein represented having inclined tubes E, a partition L of wire-netting secured in proximity to the upper series of tubes, substantially as described.

9. In a steam-boiler of the type herein represented having inclined tubes E, and ways or channels 0, a partition composed of a frame and wire-netting adapted to enter said channels E and be supported thereby in proximity to said tubes, substantially as described.

10. In asteam-boiler of the type herein represented having inclined tubes E and ways or channels 0, a partition composed of independent sections J K, I, each section consisting of a frame and wire-netting thereon; the said sections being received in and supported by said ways 0, substantially as described.

IIORACE SEE.

\Vitnesses:

J. F. METTEN, HARRY A. Mosul-1. 

